新GRE數(shù)學考點總結(jié)例題解析
新GRE數(shù)學考點總結(jié)例題解析
gre考試分為寫作、閱讀和數(shù)學等多個部分，出國gre頻道根據(jù)gre考試題型構(gòu)成，為各位考生提供了這幾個方向的復習資料，歡迎大家參考借鑒。
新GRE數(shù)學考試要求的是中學的數(shù)學知識，考生們對于新GRE數(shù)學上面來說還是比較有把握，不過說到具體的GRE數(shù)學考點要求就不一定這么清楚。下面就為大家介紹新GRE數(shù)學考點及這些GRE數(shù)學考點解析，幫助考生們系統(tǒng)的復習一遍新GRE數(shù)學，梳理整合新GRE數(shù)學考試所需要的知識。
GRE考試數(shù)學考點：Subtracting Monomials
Subtracting Monomials
To subtract a monomial from another of the same variables just subtract the coefficients. Only two like monomials can be subtracted from each other.
Example:
By subtracting 3x from 4x, we get (4-3)x=x.
By subtracting 3xy from 2xy, we get (2-3)xy=-xy.
By subtracting bx from ax, we get ax-bx=(a-b)x.
Remember:
Monomials can be subtracted only if they have the same variables with identical powers.
GRE考試數(shù)學考點：Combinations of Choices
Combinations of Choices
If there are n choices for one type and m choices for second type, then number of combinations for both types is the product of choices:n*m.
Example:
If there are 3 kinds of breads to choose from and 4 kinds of meats, then we can make 3*4=12 different sandwiches.
If an alphabet has 26 letters, then the number of possible 2 letter word is 26*26=676.All of them may not be vaild words.
Remember:
Do not add the choices to get the total combinations.
The product rule can be applied to more than two types of choices: if there are 3 kinds of breads, 4 kinds of meats, and 6 kinds of cheeses, then we can make 3*4*6=72 different sandwiches.
以上就是新GRE數(shù)學考點及GRE數(shù)學考點解析的介紹，希望這些知識點的介紹可以幫助大家復習新GRE數(shù)學，為大家復習新GRE數(shù)學提供條件。希望考生們認真復習新GRE數(shù)學考試，能夠取得自己理想的成績。
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